Home / 230,486.32-318,074.52-128,508.76

Finding the Fourth Proportional to 230,486.32, 318,074.52 and 128,508.76

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Solution

The fourth proportional to 230,486.32, 318,074.52 and 128,508.76 is: 177,343.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,486.32 : 318,074.52 = 128,508.76 : x
  2. Step 2: Convert to fraction form
    230,486.32/318,074.52 = 128,508.76/x
  3. Step 3: Cross multiply
    230,486.32x = 318,074.52 × 128,508.76
  4. Step 4: Simplify right side
    230,486.32x = 40,875,362,152.80
  5. Step 5: Solve for x
    x = 40,875,362,152.80/230,486.32
  6. Step 6: Final answer
    x = 177,343.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.